I get quite a few questions about Umbraco Backup licensing, so here is clarification about what each licensing model means.
Personal/Non-Profit: For any type of not for profit web site e.g. charities and blogs. The license is tied to a fully qualified domain name e.g. www.mysite.com.
Single Umbraco instance: For a single commercial site, tied to domain name in the same way as a non-profit license is.
Server license: Allows you to install Umbraco Backup within as many Umbraco instances as you like on a single physical webserver. All domain names for these sites *must* resolve to the same IP address. If you have two web servers you need two licenses. Changing the server IP is fine, the license is based on a domain, as long as all

I've created an umbraco package that will cache XML feeds - or any other http URL - to disk on your webserver. Click here to download the package
The idea came about as a lot of people are displaying feeds on their web pages - flickr feeds, twitter etc. In Umbraco you can cache marcos that read external URLs, but ultimately when the cache expires one user will have to take the hit of requesting this external URL as part of their page download. If the third party server is down - which twitter frequently is - then this can result in a hefty wait until the request times out.
Instructions for using the package are in the readme prior to installation so be sure to read this before proceeding with the install.
Questions, comments

will
not let you write anywhere other than your webroot, 1.1 is coming
soon, but please note that you should download your backups from
your server and remove them from the web root upon completion.
...
As a result of user feedback, it seems that a few people are
having an issue with failed backups as a result of using a backup
target directory under your web root. This is because Umbraco
backup tries to backup it's own target zip file, causing some
process conflicts.
This issue will be fixed with the release of 1.1, however,
unless you have to,Do not backup under the webroot.
Google and other search engines can index zip files and their
contents. One user has already made me

RSS output to your Umbraco webserver, possibly using some kind of
Macro, but I'd recommend using a scheduled task and simply writing
the feed to the file system as pipes with multiple feeds may impair
your page load time - if for example one...
I've been digesting some of the information on day two of
codegarden and in particular this
post that contains a list of 'most wanted' packages.
I'm unsure who requested RSS feed aggregation but before anyone
were to dive in and start coding it may be worth having a look at
Yahoo pipes.
As yahoo say:
Pipes is a powerful composition tool to aggregate,
manipulate, and mashup content from around the web.
I've been using pipes for some time to consolidate all of the
Umbraco

Everyone knows about Firebug right? If not and you are a web developer, you are missing out and making your life much harder!Yslow is an add-on for firebug that analyses the download time of a webpage and gives you tips on how to improve. Test... synchronises your bookmarks to/from a remote server. Excellent if you use several different computers on a day to day basis. Google reader notifier – An unobtrusive widget that displays the number of unread items in your Google reader account. Rolling... my productivity. Twitterfox – A Twitter client that sits in your browser bar displaying the number of unread Tweets. Clicking the icon opens up the UI overlaying the current web page that you are browsing. The UI allows you to do all the basic

for producing wire-frames of web
page layouts, though as Elliott Kember points out - in a rather long
winded blog post - it can be dangerous in the wrong hands.
Business users could suddenly think they are UI designers who can
do your job for you.Simon... when developing web
applications:Don't modify data in get requests.Keep Sessions short.Don't use a remember me function (either as a user or
developer).Don't let your pages be loaded into iFrames - use frame busting
Javascript.Add a hidden field to your forms containing a server generated
token which should be validated when a form is processed.I know I haven't given reasons for the bullet points above, but
they should be fairly obvious. Hopefully Simon's talk will appear
online

Umbraco backup public beta 2 is available available from the Project homepage.
This new version allows complete SQL server data backup even if your SQL server is remote from the webserver and you don't have the permissions of a SQL server backup operator.

Moriyama UDiff allows you to compare an Umbraco webroot to an Umbraco release zip and extract the differences.
Watch a demonstration by clicking the image below:
UDiff can be used for the following purposes:
Scheduled task on a production server to backup changes on a regular interval
Extract customisations from an Umbraco site that you have inherited (that isn't currently version controlled)
A post build event in your visual solution to copy changes to a source controlled directory... all files)
-e, --exclude=VALUE semi colon delimited list of Regexes to ignore
--project=VALUE Your web project directory
--umbracosource=VALUE An Umbraco release (directory, or URL of release zip)
-h, --help show